House Malinax was a Traitor Imperial Knight House that repudiated its oaths to the Emperor of Mankind and followed the Warmaster Horus into the service of the Ruinous Powers during the Horus Heresy. The Knight House of Malinax was founded shortly after the rediscovery and incorporation of the Forge World of Xana II, located on the western fringe in the Vicidax Thule Sector within the Segmentum Pacificus. The newly created Knight house went on to serve with distinction in some of the Great Crusade's more savage campaigns and would go on to serve alongside the Titans of the Legio Vulturum and the Taghmata Scoria throughout the latter Great Crusade.